Richabd uken and john walker



I "ii' i mi inn.'

RICHARDUREN AND JOHN WALKER; on Ho'GHTo`N,MIGHIGANQSIcNoRe.

A To THnMsnLvEs AND JoHN UREN, or 'run 'SAME PM@v o l Le'ttersPatent No.79,034,7dated Jme`16, 1868.

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' TO ALL WHOM IT. MAY CONCERN:

Be it known ther.` we, Riemen UnrN. and .Tomi WALKER, of Houghton, `inthe county of Houghton, 4und State of'Michi-ga'n, have invented o. newand improved Stamping or Quartz-Crushingll/iachine; and we do herebydeclare that the following 'is s full, clear, and exact' descriptionthereof, which'ir'iilenable others skilled in-the crt 'to make unduse'the same, reference boing ,hnd'hto the accompanying drawings,forming part ofthis specilication. v

Our improved stamping or 'quarts-crushing machine is' of Vthat classwherein the pistouis connectedfdirectly to the stamp-heed, without theintervention ofc driving-shaft and crank, .in which it is desirable/ tooperate the stump soth'at it may have cvarinble throw. of the stampeffected by an automatic valve-movement; and consists# First, inproviding supplementary cylinders and pistons, at euch end of the maincylinder, to'uct as cushions, against whichA the'force of 'thestcl'mp-pistoii mcy be expended without damage, whenever, from anycause, the piston-will b e forced against the ends of thesteam-cylinder. Second, in providing a variable automatic cut-off to.regulate the amount of stesm ndmitted'to the cylinder for raising thehammer orstemp. i Third, in `prcvidingarx adjustable outlet, 'whichninybe so graduated as to regulate the discharge ,of water andpulver-ined ore from the machino,' Fourth, inproviding the stamp-hondwithunage of such shape as to throw the water aua pulverised ore jfjagainst the screens, in a menn'e'umore readily to seperate the oresind; discharge the pulverised portion'froxii tho v .machine. e Fifth',in providing, through thebottomof the mortar, an outlet for thoseparticles of ore which do not' become suiiiciently pulverized to' passthrough-'the screens; and which' usually in 'the machines, as now con-,1- structedfbecome packedin 'the mor'tsrs so as to be diiicult'toremove. v- V.` Having described the nature of our invention, we willproceedtodescribeits construction and operation, reference being ha'd'to the accompanying drawings, in 'which- Figurel represents a front'elevutiorn 'Figure 2 representen. side: elevatioml'oueof thesupporting-posts .being removed. Figure 3 represents svertici section ofthec'yliuder 'and valve-chest on line e e. Figure 4 representen verticalsection on' line d b oil-iig. 6. Figure 5 representen4 vertical sectionon lne'c of tiig.6 Figure @represents a section o nlin'e'ol al',showings pien of thc mortar. Similar letters of referenceindicate likeparte. A is the supporting-frame, consisting of two horizontal sills,supported upon a suitable bed, from. which rise two vertical posts,connected together by suitable cross-ties, betweenwhich posts themachine'is secured. Y B is the mortar; G, the verticnl stamp-shaft,which is secured-to the piston-rod, E, by meansoi thejiianged coupling,D, and which carriee,ct its lower end, within the mortar, the stump C.

G is the 'steamecyl'ind-er 3 H and H are the supplementary cylinders.AF. is the piston', to whichvthe .piston-rod E is secured. '-N and N areval'vechests,.in which thel rotary valves, 0 and O', are 'aricngedtoeilect the opening and closing of the induction and'eductionlports, aswill be hereinafter shown. t

9 and 10 nre steam-pipes, affording communication between the boiler andsupplementery. cylinders H und. H. -1-1 and 12 are check-valves inthesame. The diameter of these cylinders and their pistone-is' greater thanthe diameter of the mein cylinder and piston, v K a'nd Kl ajre'twcross-bars, forming e yoke-when connectedl together' by the verticalnids K, to which yoke the supplementary pstonJ'is connected by itspiston-rod. l

Lis a connecting-bar, to which the rods L andi? of the'supplementnrypiston J! are secured, alsorforming eiyoke, t f

h is avortical oscillating-shaft, supported at its lower end by one ofthe crosssties of the frame, and at its upper end in the projecting endof. the bracket, R. z' is an adjustable cani-.on shaft h. 'zc s'a iixedVcam upon vthe same shaft. y is a crank, secured tothe cam 'zand to theshaft It.v :lh'is crankis connected to the crank ':n one end of theroch-Shaftsx byV the connecting-rod 'y'.

The horizontalr'ockshaft S is supported at one end in beariiigs in thebracketlt', andlat the otherend in bearings in the bracket R, and hassecured to itsv end, near the bracket R, a. crank, l, which is connectedto th o valve-stems P and P by mcans'of the conneeting-rods W and WandcranlcsQond Q.

On thei'ocli-sha'ft S, insi`dc of tlic bracket R, are lsecuredh-crank, Ya nda cam, p; Toi theouter end ofthe u crank Y is securedtlie uppeivendof lthe 'springt by means of connectingdod u. The lower end of spring t.is secured tothe'horizontal rock-shaft 7'. The said shaft r has abearing in one of the supporting-posts of the machine, and 'at its end,opposite to' that-towhich the spring is secured, carries a'segment of adisk, which has, near its periphery, a curvedslot, through which slot aset-screw works', by which means the vtensione?. the

` spring t may be adjusted.

Projecting upward fromI the top of-tlie l-ixioi'tzir B isa rod, m,which,"a't its'upper end, passes through the spring mand is held down tothe spring n by means of a nntion its upper end above the said spring.'Through the outer end of spring n-works the verticall spring-catc'lio,whichr is secured .in its place by thc guide Z. Around the lower portionof the said spring-catchl oiis arranged a'coilod spring', which hasnconstant tend- .ency to force it upward. Near the upper end of -tliespringt-catch it has a projection, which. extendsal short distance intheline of tr'avcl'of the cam p, and is curved to a circumference equal tothat describedby the outer Q end of'y the said cum p, the upper endofthe vertical portion and the outer end of the curved projectionconsti-i.4

tilting a' doublecatcli.

va is a horizontal shaft, 'suppoi'ted 'in bearings upon tliesupporting-posts, to vwhich is secured the carni about midway betweenthe pos'ts. At one cnd'is secured the crank c, to the outer end of whichare coniincted"Y the valve-rod d and valve cl.

j' is a water-tank, which receives its supply throughthe gaugecock g.Within the. said tank is a oat,

which is connected to. the levery by the'bentirod le.' The said lever 7'hasl a fulcrum at Vone 'cud in the bracket R', and is forked :itv theother cud, so as to take into, the annulargroovein the adjustable camOniieference'to figs. d andz, 19 represents the adjustable outlets,which, in this example, consist of ordinary stop-cocks, but which may bemade in any/suitable manner; 18 represents the screens, one of which isarranged inA front of e'ach ofthe outlets; QDshows an aperture, through,which the' ore end wa'ter maybeconveyed to the mortar; c2 represents aflange upon the top ofthe stamp, the under side of-which is curved, sothat when it is plunged down into the water, the latter will be thrownviolently against the sc'reei'is; 21 shows an .l

aperture, passing outward from the centre of the bottom oi' the mortar;22 represents a slide, for closingor opening the vsaid aperture; 23represents n. spring-bed, upon which the `mortar rests, of suiiicientiiexibility to allow it to yield under the blows of the stamp.

The operation of our machine is as follows: v i The posiitionoi` thepistonV being that represented inig. 3, steam will be admitted below it,causingt, vtogether with the piston-rod and stamp, to ascend until theupper face arrives at a position ncarlyon a level with the inductionport13, and the upperportion of thc coupling D nearly to thelower cross-barK1 of theyoke'. Diiringthe ascent te this point, the couplingd? comes incontact with the cam z', s c as' to cause a partial revolution oftherockJshafth, whichl communicates a similar movement to the roch-shaft S,through its connec.- tion with the same. The camp on the shaft S is, bythe same movement, caused to' pass over the projecting j upper end ofthe spring-catch oz, which is forced np,- by the spiral spring q, behindthe end of the said cam or tappctp. The same movement of rock-shaft S'operates theya'lves O and O tosiich an extent that the valve 0 shuts offthe admission of steam below the piston. The piston is continued in itsascent'by the expansion 'of the steam already in the cylinder, duringwhich further ascent the .oouplingD comesi'n contact with the 'cam w,

also on tho'rock-shaft 7i, causing, through the same connections, afurther oscillationof shaft S, moving the l camp beyond the end ofthecurved projection onthe spring-catch 0,.when it is again forced upbehind the end of the cam by the spiral springv g. The cam restsagainstfthis projection until the lesceut of the stamp.A

By this second movement of the shaft S, `thc valvcO is again moved,`soas to open communication between t the induction-port 14 and theezhaust-portl, and the valve O is movcd so as to open communication,through the induction-port 13, with the-upper end of the cylinder andthe boiler. The valves are held in this position, v

by the springgcatcli o2 and cam p, against the action of the' spring t,until the-stamp hnsdcseended upon theore b v Y n 4 a i `in themortnr,"wliich it does with such force :is will deflect the spring-bcdof-the mortar in a downward d iiection,

by which operation the rod m communicates a downward movement totho'spring-catcli ce through the spring 7i,

.and disengages the said catchfrdm the cam y, when the spring t throwsthe valves back to the original position', tb shown in'iig. 3, whensteam will again be admitted below the piston, and the operationcontinued as long 'as'- it may be desired. To avoid the damaging ed'ectof thepiston striking the uppor'or lower cylinderrhead, as is often thecase iti-machines of this class, wherein the movement of the piston isnot governed by a crank and connecting-rod, We have provided the'supplementary cylinders H H and pistons J and J.

When the piston,l in its upward increment, has received an impetusgreater than is suiiicient to elevate it to' 'thc proper height, andjust before it would strike against' the supplementary piston J, thecoupling D will etrike the lower cross-bar K1 of the yo'ke, whichcommunicates motion to the piston J in an upward direction in thecylinder M, which is filled with steam of an even pressure of that 1nthe boiler: The check-valve 11 prevents the escape of the steam, andcauses it to act as e cushion, completely overcoming the action of thepiston F,

without domage or train to the machine.

In the downward movement ofx the piston and shaft, the same operationtakes place when Athe coupling striiresthe connecting-bar L of the loweryoke.

In the operation of stamping-mills and forge-hammers, having anautomatic valvc-attachment, it is very often the ease that, by reasonofthe variable height of tliem'ss upon which the hammer or stamppisoperating, and fromother causes, theaction of the valves will be also'variable. Th'eoperatiou ofthe mechanism which I have prvidd'to overcomethis dieulty is as follows: l

'I he sliding com is placed upon the shaft IL, so as to slide freely upand down thereon. Its positionv on the shaft it isrgovernecl by theheight of the water in the tankf, acting through the lloat Z, bent roti7c, and lever je The cam b onthe shaft a is'arranged at such n positionthat when the'piston iscarried too high, the' coupling D comes incontact with cam b, oscillating; the shaft a, so as to raise the valve2' and allow the water to escape, by which means the cam is brought'to-alower position on the shaft h, andis operated by the coupling D in itsnext ascent at an earlier period of the saine to close the valve O'. p

. Onthe' other hand, `when thepston F does no t rise high enough, thevalve e will not be raised so as to allow the water to escape, so thatthe constant supply will raise'tlie float` and oax'n z', and theadmission of steam' will be cut oli' at a later period of the ascent. lY

The operation of the ange c"z of the stamphead C', by'reasoun of itscurved formation of the under side, is such as to greatly facilitate thedischarge of the pulverized ore, by splashing' the water and pulvcrizedorc directly against tho screens. y

By meanspof the adjustable apertures for the escape of theore, it may beso regulated as to pass oil' only so fast as it is delivered through thescreens bythe action of the stamp,'efl"ectiug a very material saving inthe quantity of water to be supplied tothe mill.

In the 'stamping-mills now in use avery serious diilionltyis-encountered,'by reason of those larger portions of ore, which-do notbecouie suflioiently pulverized to pass voil] through thcscreens,becomng packed .together in the bottom of themortur, the`removal of'wbich requires th'cstoppage ofthe niill, and considerablelabor in taking out the screens, and the loosening of thc `compact'massby the applicationl of the pick and crow-bar.

Non', all this diiculty iseomplctely obviated in ourmacliinebythearrangenient,uf.- vthegdischerging-aperture underneath the stamp, sothat such large particles will be forced into' and through the same bythe action of the stamp, the slide 22 being withdrawn vfrom time totime'as the aperture'becomes full. V

' Having thus described the construction and operation of our invention,what we claim, and desire to-secugze by Letters Patent, is v 1. Thesupplementary cylinders H H' and pistons J J', in combination with` thecylinder G, piston F. vstomp G, and coupling'l),` substantially asdescribed for the purpose specified. 2. The supplementary pistons J andJ', iu combination with the yokes K Kl, L, stamp C, and coupling D,substantially as described for the purpose speeicd'. Y

3. The rock-shaft h, adjustable cams e', fixed 'cam x, and arm y, incombination with the coupling D and stamp 0,-substautially as describedforthe purpose spccihed. p p

4. The crank-shaft S, cam p, connecting-rods W W', and valves O Q', inoombination'with the rock-shafth, eainsj z, coupling D, and stamp C,substantia-llyjas described for the purpose specified. Y

5. The'brolret R', lever j, and floats l, in combination with the camz', stauifpC, and coupling D,`substantially asdescribed furthe purposespecliedi i 6. The horizontal shaft a, cam la, valve 2', and val'vcrodd,in combina-tion with the coupling lD, substan-V tially as described forthe purpose speciliecl. Y

i 7. The combinationV of the springbed 23; ro"d'm, spring n,spring-catch o, tappet p, arms Y u, und spring t, substantially asdescribed for the purpose specilied. A l

rlhe above specification of ourinvention signerlby us, this fourth dayof February, 1867. A

l A t RICHARD URE'N, Witnesses: y JOHN WALKER. .Turnus HARMAN, A Cms.R., ZonN.

